JPS63133225A - Keyboard device - Google Patents

Abstract

PURPOSE:To easily and surely confirm the using state of a key used for plural purposes by using a key containing a light emitting diode having plural light colors. CONSTITUTION:An LEDd62 emits red light and d72 emits green light. When the turn-on data on the d62 is received from a main CPU 11, a slave CPU 12 rewrites the turn-on data stored in an internal RAM and turns on the d62 when both l12 and l13 are scanned. Thus an LED emits red light. When the turn-off data is received together with the turn-on data of the d72, the d62 and d72 are turned off and on respectively. Then the LED emits green light. Thus it is possible to easily and surely confirm the using state of key which is used for plural purposes.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a keyboard device for inputting data into various electronic devices.

[Prior Art] There is a keyboard device in which a light emitting device is added to a special key of the keyboard device. For example, for keys specifying kana input, kana input, romaji input, etc., the developed light diode that is pressed lights up to help confirm the input. However, the light-emitting diodes used in conventional keyboard devices emit light in a single color, and when one key is used for multiple purposes, it is not possible to distinguish and visually display them.

[Problems to be Solved by the Invention] The present invention eliminates the inconvenience caused by conventional monochromatic light emission, and provides a keyboard device that allows easy and reliable confirmation of the usage status of keys used for multiple purposes. The purpose is to

(Means for Solving the Problems) In order to achieve such an object, the keyboard device of the present invention has a visible function using light emitting diodes, and the keyboard device has keys equipped with light emitting diodes having a plurality of light emitting colors. It is characterized by having.

(Function) According to the present invention, by using light emitting diodes with a plurality of light colors in a keyboard, the visual display of keys having a plurality of functions can be clearly distinguished for each function, and the keyboard operation can be ensured. , can be easily done.

〔Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a keyboard, and 1 is a light emitting diode that emits red and green light and is embedded in a key 2. The key 2 is visually indicated by a light emitting diode 1. 3 is a key for selecting the function of key 2, and key 2 has a Z fill type function when used in conjunction with key 3.

The keyboard shown in FIG. 1 is configured such that when only key 2 is pressed, the light emitting diode 1 emits red light, and when key 2 and key 3 are pressed together, the light emitting diode 1 emits green light.

Figure TS2 shows a light emitting diode used in the present invention. As shown in the figure, two light emitting diodes IR and IG are housed in one case IC, and the light emitting diode IR emits red light and the light emitting diode IG emits green light.

An example of a method of changing the emitted light color depending on when only key 2 is pressed and when key 2 and key 3 are pressed together will be described.

Figure 3 shows the key matrix of the keyboard device (flo ~
115% mo-m7) and light emitting diode (doo=
d72) is shown. In the figure, 11 is the main CPU;
2 is a slave CPU, and 13 is a key encoder. Slave CPU has 12A ROM and 12B RAM inside.
It carries out processing according to the control program stored in area 12C of ROM 12A according to instructions from the main CPU. The RAM 12B includes a light-emitting diode lighting data flag (FLG) that stores lighting data.

The slave CPU is connected to the key matrix line (P20 to P20).
23) and light-emitting diode lighting data (P25-P
27), reads the key input status (PIO to P17) and the lighting status of the light emitting diode, and outputs the main cputt.
send to The main CPU II also performs key manual processing on the data sent from the slave CPU, and sends light-emitting diode lighting data to the slave CPU 12 if necessary. Based on the sent lighting data, the slave CPU 12
rewrites the lighting data in RAM. As the lighting data in the RAM, for example, a bit matrix corresponding to each light emitting diode can be created, and the on/off state of each light emitting diode can be represented by the on/off state of the bit.

For example, d62 in Figure 3 is a diode that emits red light, and d7
2 is a diode that emits green light, which can be housed in a single case to create a diode with variable lighting color as shown in FIG. When the main CPU 11 sends the lighting data for dG2, the slave CPU 12 rewrites the lighting data in its internal RAM, and -”12 and °C.
Light up d62 when scanning 13. Therefore, the light emitting diode emits red light. Further, when data for turning off d6□ and turning on data for d72 are sent, dG2 is turned off and d72 is turned on. Therefore, the light emitting diode emits green light.

The fourth flowchart shows the 0 lighting control in which the lighting control is performed by the control program stored in the ROM12A.
As shown in the figure. When a key operation is performed at Sl, it is checked at 52 whether the operated key is the light emitting diode - key 2 that should be turned on completely, and if so, the process advances to S3. In S3, it is checked whether key 3 is operated,
If it has been operated, proceed to S4 and turn on the lighting data flag.
L, lights up the light emitting diode L in green and proceeds to the next key operation. If key 3 is not made in one row, proceed to S5,
Set the lighting data flag to 0FFL, make light emitting diode 1 emit red light, and proceed to the next key operation.In S2, if the key being operated does not require the light emitting diode to light up, proceed to S6. Performs the process corresponding to the key and moves on to the next key operation.

It goes without saying that the method of causing the light emitting diode to emit light in multiple colors is not limited to this embodiment.

(Effects of the Invention) As explained above, by using light emitting diodes with multiple lighting colors in the keyboard, the visual display of keys with multiple functions can be clearly distinguished for each function, and the keyboard operation can be done reliably and easily.

[Brief explanation of the drawing]

FIG. 1 is a top view of a keyboard showing an embodiment of the present invention; FIG. 2 is a schematic diagram of a light emitting diode that emits light in multiple colors; FIG. 3 is a circuit diagram of the key matrix of the keyboard device and the light emitting diode; FIG. 4 is a flowchart of lighting control. 1...Light emitting diode, 2...Key, 3...Selection key, IR...Red light emitting diode, IG...Green light emitting diode, IC...Case, 11...Main CPU. 12...Slave CPU. 13...Key encoder, d00""' d72...Light emitting diode. Figure 4

Claims (1)

[Claims] What is claimed is: 1. A keyboard device having a visual function using light emitting diodes, characterized in that the keyboard device has a key to which light emitting diodes having a plurality of colors of light are attached.